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DUCTLESSAIRE vs Generallux heat pumps

Measured against models of the same size and duct type, DUCTLESSAIRE and Generallux split the 6 ratings 3–3. DUCTLESSAIRE has 16 outdoor models, Generallux has 17 outdoor models. DUCTLESSAIRE and Generallux have no QMID on file and are not ranked.

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CompareData as of updated · sources

Against comparable models

Each cell is the share of same-size, same-type models that the manufacturer’s typical model beats (50% is typical); the higher score is in bold. Raw medians are underneath for context: they depend on which sizes each one makes, so they are not compared.
DUCTLESSAIRE and Generallux on every ratingPeer scores, 0–100 · grey ticks: every ranked manufacturer · shaded: the middle half of each one’s modelsMeasured against models of the same size and duct type, DUCTLESSAIRE and Generallux split the 6 ratings 3–3.
  • DUCTLESSAIRE
  • Generallux
  • Other ranked manufacturers
DUCTLESS…Generall…

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingDUCTLESSAIREGenerallux
Efficiency index54% (higher)median —47% (higher)median —
COP at 5°F64% (higher)median 2.1039% (higher)median 1.90
Capacity retention at 5°F37%median 71%41%median 72%
HSPF257%median 9.558%median 10.0
SEER262% (higher)median 21.259% (higher)median 22.5
EER250% (higher)median 12.039% (higher)median 11.2
Heating capacity at 5°F45%median 12,950 Btu/h51%median 13,600 Btu/h
Outdoor models1617
AHRI certifications2423

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardDUCTLESSAIREGenerallux
CEE 2025 Tier 1 (Split ASHP)81.3%13 models76.5%13 models
CEE 2026 Tier 1 (Split ASHP)81.3%13 models76.5%13 models
CEE Advanced Tier (Split ASHP)0%0 models0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)75%12 models70.6%12 models
DOE Cold Climate Heat Pump Challenge0%0 models0%0 models
ENERGY STAR Cold Climate62.5%10 models0%0 models

Sizes and duct types offered

Models in each peer group, with the efficiency index of those models against the rest of the group.
Side by side, inside each size and duct typeShape: every model of the group · bars: each manufacturer’s middle half, median dot, 10th–90th line · 5 groups where both have models
  • DUCTLESSAIRE
  • Generallux
  • All models of the group
Ducted, up to 1.5 tons1.901,783 modelsDucted, 2 tons2.001,090 modelsDucted, 2.5–3 tons2.001,909 modelsDucted, 3.5–4.5 tons2.002,224 modelsNon-ducted, up to 1.5 tons1.953,455 modelsNon-ducted, 2 tons2.00863 modelsNon-ducted, 2.5–3 tons2.001,106 modelsNon-ducted, 3.5–4.5 tons2.00564 modelsmedian

Raw ratings are only placed side by side within one size and duct type, where they are comparable.

Source: AHRI Directory · as of

Models per peer group · efficiency index within the group
Size and duct typeDUCTLESSAIREGenerallux
Ducted, 2 tons2 · index 65%1 · index 56%
Ducted, 2.5–3 tons1 · index 70%None
Ducted, 3.5–4.5 tons1 · index 85%None
Ducted, up to 1.5 tonsNone2 · index 50%
Non-ducted, up to 1.5 tons9 · index 52%10 · index 49%
Non-ducted, 2 tons5 · index 45%3 · index 42%
Non-ducted, 2.5–3 tons1 · index 58%3 · index 46%
Non-ducted, 3.5–4.5 tons1 · index 51%1 · index 42%

Cold-climate and all-around picks, size class by size class

Each manufacturer’s best model on each board in every size and duct type, side by side; the higher score is in bold. Both scores are 0–100 against every model of that size class (the line on each bar is 50, the typical model there), so the two compare fairly even when they make different sizes.

Cold-climate picks

Best cold-climate pick per size and duct type (keeps at least 70% of its heat at 5°F). Qualifies when its capacity retention at 5°F (capacity at 5°F as a share of capacity at 47°F) is at least 70% and Capacity retention at 5°F, COP at 5°F, HSPF2 are all rated. Score = the equal-weight mean of its peer percentiles on Capacity retention at 5°F, COP at 5°F, HSPF2 (share of the other models in its peer group it beats, 0–100), all from one certified pairing: in each duct type a model is sold in, its qualifying pairing of that type with the best score; equal scores (one decimal) go to the higher heating capacity at 5°F.
Size and duct typeDUCTLESSAIRECold-climate score, best modelGeneralluxCold-climate score, best model
Ducted, up to 1.5 tonsNo models in this size class54.1(50 is the typical model of its size class)TSHG18E2S22NAR45O2 of 2 models qualify · AHRI 216765726
Ducted, 2 tons48.6(50 is the typical model of its size class)454-28-4Z-OAlso listed as DA27-4Z-O2 of 2 models qualify · AHRI 21723213260.1(50 is the typical model of its size class) (higher)TSHG24E2S20NAR45O1 of 1 models qualify · AHRI 216765727
Ducted, 2.5–3 tons60.6(50 is the typical model of its size class)454-36-5Z-O1 of 1 models qualify · AHRI 217232141No models in this size class
Ducted, 3.5–4.5 tons77.9(50 is the typical model of its size class)454-48-6Z-O1 of 1 models qualify · AHRI 217232138No models in this size class
Non-ducted, up to 1.5 tons84.7(50 is the typical model of its size class) (higher)454-9-O-DAwith ductless indoor unit 454-9-I-DAAlso listed as 454-09-O-DA6 of 9 models qualify · AHRI 21723212768.6(50 is the typical model of its size class)TFM2G18CHAIR454B7 of 10 models qualify · AHRI 216765715
Non-ducted, 2 tons52.6(50 is the typical model of its size class)454-24-O-DAwith ductless indoor unit 454-24-I-DA4 of 5 models qualify · AHRI 21723213058.8(50 is the typical model of its size class) (higher)TSHG24E2S20NAR45Owith ductless indoor unit TSCAS24CD2VIR45I2 of 3 models qualify · AHRI 216765724
Non-ducted, 2.5–3 tons47.2(50 is the typical model of its size class)454-36-5Z-O1 of 1 models qualify · AHRI 21723214057.5(50 is the typical model of its size class) (higher)TFM3G27CHAIR454B2 of 3 models qualify · AHRI 216765716
Non-ducted, 3.5–4.5 tons60.1(50 is the typical model of its size class) (higher)454-48-6Z-O1 of 1 models qualify · AHRI 21723213931.2(50 is the typical model of its size class)TFM5G42CHAIR454B1 of 1 models qualify · AHRI 216765718

All-around best

Best all-around model per size and duct type. Score = 50% heating, the mean of its peer percentiles on COP at 5°F, Capacity retention at 5°F, HSPF2, plus 50% cooling, the mean of its peer percentiles on SEER2 and EER2 (share of the other models in its peer group it beats, 0–100). All five ratings are required; there is no minimum heat kept at 5°F. In each duct type a model is sold in, it is scored on its pairing of that type with the best score; equal scores (one decimal) go to the higher cold-climate score, then the higher heating capacity at 5°F.
Size and duct typeDUCTLESSAIREAll-around score, best modelGeneralluxAll-around score, best model
Ducted, up to 1.5 tonsNo models in this size class57.0(50 is the typical model of its size class)TSHG18E2S22NAR45O2 of 2 models have all five ratings · AHRI 216765726
Ducted, 2 tons64.5(50 is the typical model of its size class) (higher)454-28-4Z-OAlso listed as DA27-4Z-O2 of 2 models have all five ratings · AHRI 21723213255.8(50 is the typical model of its size class)TSHG24E2S20NAR45O1 of 1 models have all five ratings · AHRI 216765727
Ducted, 2.5–3 tons69.5(50 is the typical model of its size class)454-36-5Z-O1 of 1 models have all five ratings · AHRI 217232141No models in this size class
Ducted, 3.5–4.5 tons85.1(50 is the typical model of its size class)454-48-6Z-O1 of 1 models have all five ratings · AHRI 217232138No models in this size class
Non-ducted, up to 1.5 tons85.6(50 is the typical model of its size class) (higher)454-9-O-DAwith ductless indoor unit 454-9-I-DAAlso listed as 454-09-O-DA9 of 9 models have all five ratings · AHRI 21723212774.4(50 is the typical model of its size class)THH12E2S25NAR454Owith ductless indoor unit THH12E2S25NAR454I10 of 10 models have all five ratings · AHRI 216765712
Non-ducted, 2 tons56.7(50 is the typical model of its size class) (higher)454-28-4Z-OAlso listed as DA27-4Z-O5 of 5 models have all five ratings · AHRI 21723213156.5(50 is the typical model of its size class)TSHG24E2S20NAR45Owith ductless indoor unit TSCAS24CD2VIR45I3 of 3 models have all five ratings · AHRI 216765724
Non-ducted, 2.5–3 tons58.3(50 is the typical model of its size class)454-36-5Z-O1 of 1 models have all five ratings · AHRI 21723214065.1(50 is the typical model of its size class) (higher)TFM3G27CHAIR454B3 of 3 models have all five ratings · AHRI 216765716
Non-ducted, 3.5–4.5 tons52.8(50 is the typical model of its size class) (higher)454-48-6Z-O1 of 1 models have all five ratings · AHRI 21723213942.4(50 is the typical model of its size class)TFM5G42CHAIR454B1 of 1 models have all five ratings · AHRI 216765718

All-around board, every manufacturer

Standout model on each rating

Each manufacturer’s model that beats the largest share of comparable models on the rating; the higher share is in bold.
Top model per rating by peer percentile, with its AHRI-certified value and peer group
RatingDUCTLESSAIREGenerallux
COP at 5°Fbeats 96% · 2.39454-18-O-DANon-ducted, up to 1.5 tonsbeats 81% · 2.03TSHG36E2S19NAR45ONon-ducted, 2.5–3 tons
Capacity retention at 5°Fbeats 66% · 81%454-48-6Z-ODucted, 3.5–4.5 tonsbeats 87% · 100%THH12E2S25NAR454ONon-ducted, up to 1.5 tons
HSPF2beats 96% · 13.0454-9-O-DAAlso listed as 454-09-O-DANon-ducted, up to 1.5 tonsbeats 81% · 10.4TSHG24E2S20NAR45ONon-ducted, 2 tons
SEER2beats 96% · 20.4454-48-6Z-ODucted, 3.5–4.5 tonsbeats 91% · 24.0TFM3G27CHAIR454BNon-ducted, 2.5–3 tons
EER2beats 87% · 14.4454-9-O-DAAlso listed as 454-09-O-DANon-ducted, up to 1.5 tonsbeats 83% · 14.0THH12E2S25NAR454ONon-ducted, up to 1.5 tons
Heating capacity at 5°Fbeats 76% · 13,400 Btu/h454-18-O-DANon-ducted, up to 1.5 tonsbeats 90% · 17,800 Btu/hTHH18E2S24NAR454ONon-ducted, up to 1.5 tons

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